DES MOINES, Iowa (AP) — At least one Iowa congressman’s career will end Tuesday in an election that has forced each member of the state’s House delegation to work hard for another two-year term in Washington. Thanks to redistricting and well-funded challengers, no incumbent can cruise to re-election. And in the 3rd Congressional District, either nine-term Republican Rep. Tom Latham or eight-term Democratic Rep. Leonard Boswell will be out of a job. All of Iowa’s four congressional races are seen as competitive. Voters will also be tasked with deciding which party will control the Legislature and whether to retain an Iowa Supreme Court justice who supported gay marriage. Latham chose to move into the Des Moines-focused 3rd district after Iowa lost a congressional seat due to once-a-decade redrawing of boundaries to reflect population changes.